The song River Deep Mountain High by Heather Headley is a love song that compares the depth and intensity of the singer's love to the power of a river and the height of a mountain. She talks about how her love has grown over time, much like the way her love for a rag doll from her childhood has evolved. The lyrics also highlight the singer's unwavering faithfulness to her partner, comparing it to a loyal puppy that never leaves one's side. As the song progresses, the singer affirms her love for her partner in various ways, comparing it to the love of a flower for the spring, or a school mom for her child. Ultimately, the song is a testament to the depth of the singer's love and her commitment to her partner. The repetitive chorus emphasizes the strength and depth of this love, using powerful images of nature to convey the intensity of her emotions.